Feasibility of using magneto hydrodynamic system for increasing the operational Mach range of an aero gas turbine engine

Today, increasing the operating Mach of air turbine engines is the focus of scientists. The use of magneto-hydrodynamic (MHD) energy allows the use of a turbojet engine in a supersonic flight. For the performance of turbojet engine in supersonic flight, it is necessary to reduce the speed of the inlet flow. In this new method, the high kinetic energy of the incoming supersonic flow is converted into electrical energy, and by reducing the speed of the incoming air flow, in addition to enabling proper operation of the turbine engine, electrical energy is used to accelerate the outgoing gas flow. In this research, the thermodynamic cycle of a turbojet engine with MHD system, for the proper operation of this engine at Mach 2 above, is analyzed and the parameters affecting the production thrust and efficiency are investigated. The results show that applying a magnetic field to the flow, while providing suitable conditions for the turbojet engine at high Mach, converts the kinetic energy of the high-speed flow into electrical energy and is ultimately used to increase the thrust and increase the operating Mach range of the turbojet engine. The results indicate that in the range of Mach 2 to 4, the specific thrust in the studied engine increases up to 343 N/(kg/s).